The old man's question stumped everyone present, including me and Shaylin.

However, there are also those who are not convinced, this person is the aunt sitting opposite the old man.

The aunt is in her forties, dressed ordinarily, looks average, and speaks in dialects, so she knows that she is a local when she hears it.

The aunt should know Modu Mountain very well, and it is very likely that she is a tour guide, and she is sitting here at this time, it should be because of the convenience of sheltering from the rain.

Hearing the old man's words, the aunt saw that everyone couldn't answer, so she said to the old man: "Old man, this matter is not simple? Those swords in ancient times were spiritual, and they needed blood sacrifices to succeed, which is a very simple truth. ”

Hearing the aunt's answer, the old man smiled and said, "This eldest sister's words are a little superstitious, a sword is a sword, what spirituality can there be?" Your explanation is too far-fetched to get to the point. ”

"And what do you say is going on?" Aunt pouted.

"Then I'll talk about the scientific explanation of the matter," said the old man, shaking his fan.

"And the scientific explanation, hehe, these things are a legend, what scientific explanation can there be? It's okay, don't fool people. "Auntie doesn't believe that the old man can give a scientific explanation.

"Auntie, my master is a professor of Zhejiang University and an academician of the Chinese Academy of Sciences, and his research includes metallurgy. Hearing the aunt's words, the young man next to the old man said a word of help, revealing the identity of the old man.

Unexpectedly, the old man was actually a professor, and everyone present couldn't help but be in awe of him in an instant, and they all looked at him with wide eyes, waiting for his scientific explanation.

"Hehe, then I'll tell you about the scientific truth of martyrdom with your body," the old man smiled slightly, closed the fan, and then looked at everyone: "Everyone should know that before the Han Dynasty, at the latest in the Three Kingdoms period, the weapons used by the ancients were mainly cast in bronze, why is this, do you know?" ”

Everyone shook their heads, who didn't have anything to do with these things? So everybody doesn't know.

"This is mainly because the melting point of bronze is relatively low, only about 1,000 degrees, and after bronze is formed, it is relatively strong and durable, so before the Han Dynasty, the main metal products were bronze." When the old man said this, he paused and said: "Everyone knows that the reserves of copper in nature are less than that of iron, and after iron is formed, it is stronger than copper in terms of weight and hardness, but why didn't people use iron at that time?" The reason is because the melting point of iron is high, about 1,500 degrees, and before the Han Dynasty, due to the low level of smelting, especially at that time, the fuel used in metallurgy was charcoal, not coke, which led to the limited upper limit of temperature that metallurgy can achieve, and people could not melt iron, so they naturally could not make iron. ”

"Iron, in ancient times, was also known as evil gold, and it was very difficult to melt. In ancient times, many swordsmiths encountered the problem of evil gold not melting, so the theory of martyrdom appeared. The so-called martyrdom of the sword is some with sacrifice, some with one's own hair and flesh, and the most cruel is the martyrdom of the human body. When the old man said this, he took a sip of tea and continued: "The martyrdom is not just a legend, it is scientific. As we all know, most of our bodies are organic matter, and the main organic matter is carbon, hydrogen and oxygen, which can be burned by the human body and can reach a very high temperature. Therefore, the so-called martyrdom is actually by adding flammable organic matter to the sword-casting furnace in order to reach the temperature of the smelting iron. ”

"So that's the case," after listening to the old professor's words, everyone present couldn't help but suddenly realize and sigh.

"And," the old professor continued, "you should know that the hardness and toughness of pure iron are limited, and the really hard iron products are actually steel. Steel is an alloy of iron and carbon, so people in ancient times practiced the method of martyrdom and inadvertently created a steel alloy, because the main component of organic matter is carbon. In this way, they surpassed the times and made the steel sword in advance, which was naturally much more powerful than the bronze sword, and if the iron-carbon ratio was reasonable, the steel sword could reach a very sharp and hard level, and the so-called bronze sword could be easily cut. This is a rare treasure for people of that era. That's why there were so many legends of the divine sword in ancient times, what kind of cadre Mo Xie, what ancestor sword, what Chixiao sword, in fact, those swords, looking at it today, may be the same grade as the knife used to cut vegetables at home, but in that era, it was an artifact. ”

"Oh, that's what happened, that's really a knowledge." The old professor's words made everyone present nod, and everyone unintentionally learned wonderful knowledge, and their faces were full of excitement.

However, there are also unhappy people, one of whom is the unconvinced aunt.

"Sir, you have a very reasonable point, but in this way, the original wonderful and bizarre legend becomes meaningless. I still think that those Excalibur do have souls, and things can't be as simple as you say. Aunt said.

"Hehe, eldest sister, we have to believe in science," the old man laughed.

"Believe in science? Since you believe in science, what else do you come to Modu Mountain for? This is the place where the sword is forged, since their deeds are so ignorant in your eyes, then what else do you want to see? Aunt retorted.

Hearing this, the old man smiled and said, "Eldest sister, don't say it, I'm not here to visit and travel, I'm here to conduct a scientific investigation." ”

"Scientific expeditions? What do we have to look into here? When everyone heard this, they were a little puzzled.

"Big guys, you can look up at the top of Modu Mountain," the old professor pointed out the window with a folding fan as he spoke, and said to everyone: "The peak of Modu Mountain has constant lightning all year round, known as the Thunder Pool, do you know what the reason is?" This Modu Mountain is not big, and the second is not high, why is there the most lightning here? ”

"Isn't that easy? That's because the cadres turned Mo Ye's twin swords into dragons and put them into the sword pool, the dragon follows the clouds, the tiger follows the wind, and the dragon wants to soar into the clouds and fly in the fog, so naturally there will be a little more lightning. The local aunt once again gave a "reasonable" explanation.

Hearing this, the old professor smiled helplessly and said, "Sister, you are wrong again, this lightning also has a scientific explanation, we can't believe in superstition." ”

The old professor's words caught my attention, and I couldn't help but squeeze forward, looked at the old professor and said, "Old man, do you know what happened to the lightning on the top of Modu Mountain?" Can you tell us about it? ”

"You can teach, children, you are very studious," Hearing my words, the old professor raised his eyes and looked at me, and then he talked eloquently: "Modu Mountain is one of the four major minefields in China, and there are many lightning on the top of the mountain, but whenever it is windy and rainy, in short, as long as there is lightning, it will first split on the top of the mountain, do you know what is going on?" Could this really be caused by the Yin and Yang swords turning into a real dragon? Or is it some kind of coincidence? Hehe, let's tell you the truth, in fact, the reason here is very simple, and the main reason is because Modu Mountain is a golden mountain. ”

[Next Chapter Preview: Ghost Spirit, Time 20160706, 15:00]